Mark NewVolumeManagerReconstruction as implemented

It's GA in Kubernetes 1.30

Author: jsafrane

keps/sig-storage/3756-volume-reconstruction/kep.yaml

@@ -5,7 +5,7 @@ authors:
 owning-sig: sig-storage
 participating-sigs:
   - sig-node
-status: implementable
+status: implemented
 creation-date: 2023-01-20
 reviewers:
   - "@msau42"